Experimental Verification of Range-Dependent Inversion: Shallow Water Experiment 2006
Abstract
LONG-TERM GOALS. Develop methods for rapid assessment of sediment properties relevant for acoustic propagation in a range-dependent shallow water environment. OBJECTIVES. Modal dispersion data are input to inversion schemes that estimate sediment properties in a range-independent environment. This approach has now been extended to include range-dependent environment. Simulation studies show that range-dependent sediment properties can be extracted if modal dispersion data are obtained for multiple source/receiver locations. It is proposed to collect suitable data during the Shallow Water 2006 experiment to verify the feasibility of estimating the range dependent sediment properties from modal dispersion information. APPROACH. In shallow water, the acoustic field can be represented as a sum of contributions from a set of propagating modes. It is well known that modal dispersion data contain information about the characteristics of the shallow water wave guide including the acoustic characteristics of the sediment. Inversion scheme that use the modal dispersion data for estimating sediment acoustic properties in a range independent environment has been described in the literature [1]. This approach has been modified to determine the sediment properties in a range-dependent environment as outlined below.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 2006
- Accession Number
- ADA630923
Entities
People
- Subramaniam D. Rajan